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author | Guido van Rossum <guido@python.org> | 1998-12-04 15:32:17 (GMT) |
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committer | Guido van Rossum <guido@python.org> | 1998-12-04 15:32:17 (GMT) |
commit | 8c2da61811e3f6aa50859d656b7c2f0ac58226f3 (patch) | |
tree | c7697d28504d766717b8e369a68ac925a2288ff5 /Doc/lib/libfuncs.tex | |
parent | ce0bbd270b6f8ae82d3e164c0d95a99a0c1c235c (diff) | |
download | cpython-8c2da61811e3f6aa50859d656b7c2f0ac58226f3.zip cpython-8c2da61811e3f6aa50859d656b7c2f0ac58226f3.tar.gz cpython-8c2da61811e3f6aa50859d656b7c2f0ac58226f3.tar.bz2 |
Add explicit example on how to import a submodule of a package using
__import__ and getattr().
Diffstat (limited to 'Doc/lib/libfuncs.tex')
-rw-r--r-- | Doc/lib/libfuncs.tex | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/Doc/lib/libfuncs.tex b/Doc/lib/libfuncs.tex index d7ee837..466351d 100644 --- a/Doc/lib/libfuncs.tex +++ b/Doc/lib/libfuncs.tex @@ -44,6 +44,21 @@ using \samp{import spam.ham.eggs}, the top-level package \code{spam} must be placed in the importing namespace, but when using \samp{from spam.ham import eggs}, the \code{spam.ham} subpackage must be used to find the \code{eggs} variable. +As a workaround for this behavior, use \function{getattr()} to extract +the desired components. For example, you could define the following +helper: + +\begin{verbatim} +import string + +def my_import(name): + mod = __import__(name) + components = string.split(name, '.') + for comp in components[1:]: + mod = getattr(mod, comp) + return mod +\end{verbatim} + \end{funcdesc} \begin{funcdesc}{abs}{x} |